TABLE 1

Results of two platforms for rapid identification of 118 mono-microbial blood cultures

Sample (n)aNo. (%) with result by test
FilmArray BCID panelVerigene BC-GP and BC-GN-RUO
Correctly identifiedMisidentifiedNot identifiedCorrectly identifiedMisidentifiedNot identified
Total identifiable GP organisms (82)77 (94)5 (6)82 (100)
    Staphylococcus spp. (64)64 (100)64 (100)
        S. aureus (32)32 (100)32 (100)
            mecA pos (13)13 (100)13 (100)
            mecA neg (19)18 (95)1b (5)19 (100)
        Coagulase negative (32)31 (97)1c (3)32 (100)
            mecA pos (18)18 (100)
            mecA neg (14)11 (79)3d (21)
        S. epidermidis (23)23 (100)
            mecA pos (16)16 (100)
            mecA neg (7)7 (100)
        S. lugdunensis (1)1 (100)
        Otherse (8)8 (100)
    Streptococcus spp. (9)9 (100)9 (100)
        S. agalactiae (2)2 (100)2 (100)
        S. pyogenes (1)1 (100)1 (100)
        S. anginosus group (1)1 (100)
    Enterococcus spp. (9)9 (100)
        E. faecalis (5)5 (100)
            vanA neg (5)5 (100)5 (100)
        E. faecium (4)4 (100)
            vanA pos (4)4 (100)4 (100)
    Nonidentifiable GP organismsf5 (100)5 (100)
Total identifiable GN organisms (27)27 (100)25 (96)1 (4)
    Enterobacteriaceae (23)23 (100)
        Enterobacter spp. (1)1 (100)
            E. cloacae complex (1)1 (100)
        E. coli (11)11 (100)11 (100)
        Klebsiella oxytoca (1)1 (100)1 (100)
        K. pneumoniae (6)6 (100)6 (100)
        S. marcescens (2)2 (100)1 (50)1g (50)
        Citrobacter spp. (1)1 (100)
        Othersh (2)2 (100)
    Pseudomonas aeruginosa (4)4 (100)4 (100)
    GN resistance markers
        KPC (1)1 (100)1 (100)
        CTX-M (1)1 (100)
    Nonidentifiable GN organismsi4 (100)5 (100)
Total identifiable isolates104 (95)5 (5)107 (99)1 (1)
  • a GP, Gram-positive; GN, Gram-negative; pos, positive; neg, negative.

  • b One culture positive for S. aureus was also positive for mecA but methicillin-sensitive by routine testing.

  • c One culture identified as S. aureus grew S. epidermidis by routine identification.

  • d Three cultures positive for coagulase negative staphylococci were positive for mecA but methicillin-sensitive by routine testing.

  • e Included three Staphylococcus capitis, two S. haemolyticus, and three S. hominis strains.

  • f Included one Anaerococcus sp., two Corynebacterium spp., one Gemella sp., and one anaerobic GP bacillus.

  • g One culture reported as negative grew S. marcescens by routine identification.

  • h Included one Citrobacter amalonaticus strain and one Salmonella sp.

  • i Included one Moraxella sp., two Stenotrophomonas spp., and one Bacteroides sp.; the BC-GN-RUO test was unable to identify one Salmonella sp.